►Groveland: At Johnson’s Pond on the Groveland/Boxford line, two tufted ducks continue to associate with a flock of scaup there. Two Northern shovelers were seen in Groveland.

►Plum Island: At Parker River National Wildlife Refuge, a major hawk migration on Tuesday included six ospreys, 19 Northern harriers, 362 American kestrels, and 16 Merlins. Other migrants seen at the refuge included nine Northern shovelers, 16 Northern pintails, a pied-billed grebe, 15 Northern flickers, 10 Eastern phoebes, 25 golden-crowned kinglets, three ruby-crowned kinglets, several hermit thrushes, a brown thrasher, and a palm warbler.

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►Cambridge: At Mount Auburn Cemetery, a great horned owl, a yellow-bellied sapsucker, a winter wren, a number of golden-crowned kinglets, two hermit thrushes, several chipping sparrows, and two fox sparrows.

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►Concord: At the Great Meadows National Wildlife Refuge, two blue-winged teal, two Northern shovelers, two Northern pintails, 11 green-winged teal, 18 ring-necked ducks, a pied-billed grebe, seven American coots, nine Wilson’s snipes, a purple martin, and three palm warblers.

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►Miscellaneous: a Northern shoveler at Hammond Pond in Newton; three harlequin ducks, an American oystercatcher, a red knot, and a blue-headed vireo at Duxbury Beach; a red-throated loon and a chimney swift at Millennium Park in West Roxbury; a manx shearwater and five piping plovers at Revere Beach; a cattle egret in Ipswich; and 11 American kestrels at Hanscom Field in Bedford.

For more information about bird sightings or to report sightings, call 781-259-8805 or go to www.massaudubon.org.